The Collaborative International Dictionary
Phytolithology
Phytolithology \Phy`to*li*thol"o*gy\, n. [Phyto- + lithology.] The branch of science which treats of fossil plants; -- usually called paleobotany, sometimes paleophytology.
Wiktionary
phytolithology
n. The science that deals with fossil plants; paleobotany; paleophytology.